Fig. 4

Percentages of sequences (out of 2.2 million; ie; 220,000 = 10%, etc.) on the x axis, and number of kmers that match the query taxa on the y axis. Bixa was successfully identified in a mixture of Oryza sativa 30%, Zea mays 30%, Gossypium hirsutum 30%, Pseudomonas aeruginosa 3.3%, Salmonella enterica 3.3%, and Escherichia coli 3.3%; at 5, 2.5, 1.25, 0.6, 0.3% and at some poorly supported levels of 0.03%, and was lost in all subsequent “dilutions”. Shown here is successful identification of Bixa at 1.25, 0.63, 0.3 and 0.03%. (There is almost perfect overlap of all three Bixa genomes so it appears as only one line)